A curious teen, glasses perched on his nose, sneaks into his sister's room, drawn by her soft moans. He finds her, innocent and unaware, playing with herself under the covers. Her eyes widen in surprise, but she doesn't stop. Hypnotized, he watches her fingers dance, her breath hitching. She notices his growing bulge and, with a naughty smirk, beckons him closer. He hesitates, then sits beside her, his hand trembling as he reaches out to touch her bare skin. She guides him, teaching him how to pleasure her, her moans filling the room as he tentatively explores.